[NTG-context] iso latin 2

[Adam Lindsay]

Vit Zyka said this at Wed, 9 Feb 2005 22:34:13 +0100:

>The question is how to elegantly switch from standard (st2) tfm to 
>extended (st3) tfm when the glyph is not present in st2 - with 
>preserving \rm, \bf, \it, \bi.
>
>Example: {\bf Bold text with special char \textplus} where \texplus is 
>bold variant from st3 encoded tfm. It is understandable?

Interesting. There are a couple possibilities, I think. 
My current favourite, \variant[something], is essentially a convention
that's built on top of the font synonym mechanism. There's an example
given at:
<http://contextgarden.net/Font_Variants>
...but I haven't done a proper write-up yet.

basically, you declare a variant set for a (Serif/Sans/Mono) family:
\definefontvariant  [Serif] [exp]         [-Expert] 
                  % [fam]   [call abbrev] [synonym suffix]

And then you create font synonyms for each of the possible seven
SerifBlah-Expert fonts that would be called, e.g.:

\definefontsynonym  [SerifRegular]        [AndulkaText]
\definefontsynonym  [SerifRegular-Expert] [AndulkaTextExpert]
\definefontsynonym  [SerifBold]           [AndulkaTextBold]
\definefontsynonym  [SerifBold-Expert]    [AndulkaTextBoldExpert]

Where the AndulkaText font resolves to your st2 encoding, and
AndulkaTextExpert is in your st3 encoding.  (I haven't tried this trick
with different encodings, but it *should* work!)

You can then call the proper variant with {\bf Hi there \Var[exp]+}, or
create a level of indirection with your \textplus macro so that it calls
the [exp] variant and the glyph together.

The Storm fonts are beautiful. Sigh. Have fun with them...
-- 
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 Adam T. Lindsay, Computing Dept.     atl at comp.lancs.ac.uk
 Lancaster University, InfoLab21        +44(0)1524/510.514
 Lancaster, LA1 4WA, UK             Fax:+44(0)1524/510.492
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